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41. | homodyne receiver |
| 零拍接收机 |
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42. | Pulse radar receiver |
| 脉冲雷达接收机 |
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43. | phase-modulation receiver |
| 调相接收机 |
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44. | facsimile receiver |
| 传真电报接收机 |
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45. | narrow-band receiver |
| 窄带接收机 |
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46. | interference receiver |
| 干扰接收机 |
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47. | portable receiver |
| 便携式接收机 |
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48. | receiver antenna |
| 接收机天线 |
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49. | inverted receiver |
| 倒置接收机 |
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50. | thermionic valve receiver |
| 热电子接收机 |
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